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ESI Outdoor Unit Installation Instruction
05.2018
Manufacturer reserves the right to change at any time for specifications or designs without notice and incurring obligations.
Heating mode
Connect a pressure gauge to liquid stop valve, compare the gauged pressure with the transduced
one by high pressure sensor.
YES
NO
Does the EEV cable securely connected to CN13 terminal.
Reconnect the cable
Check the pressure transduction based on
High Pressure
Sensor Voltage Characteristics D*
. Is the value of high
pressure sensor detected close to the gauged one?
YES
NO
Replace the high pressure sensor
Set high capacity mode and restart the unit, does the error code
remain?
NO
Keep running
Replace the main control board
YES
NO
Reset the sensor or reconnect the
wire
YES
Check whether the discharge temperature sensor is properly
seated on the discharge pipe and securely connected to CN7
terminal on the main control board.
Lock the liquid stop valve and use test mode 8 (
*Note)
to fix
compressor speed. Recover the refrigerant from outdoor unit to
indoor unit side. The EEV cannot be closed if the recover
process is failed.
YES
NO
Replace the EEV coil to repeat
test mode 8. Change the EEV
body if it fails again.
Note:
Hold BS4 for 5sec, and press BS2 once in one minute will activate test mode 8.